Patents by Inventor Stefan Hadrath

Stefan Hadrath has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200284883
    Abstract: The present disclosure relates to various embodiments of an optical component for a LIDAR Sensor System. The optical component may include an optical element having a first main surface and a second main surface opposite to the first main surface, a first lens array formed on the first main surface, and/or a second lens array formed on the second main surface. The optical element has a curved shape in a first direction of the LIDAR Sensor System.
    Type: Application
    Filed: March 5, 2020
    Publication date: September 10, 2020
    Inventors: Ricardo Ferreira, Stefan Hadrath, Peter Hoehmann, Herbert Kaestle, Florian Kolb, Norbert Magg, Jiye Park, Tobias Schmidt, Martin Schnarrenberger, Norbert Haas, Helmut Horn, Bernhard Siessegger, Guido Angenendt, Charles Braquet, Gerhard Maierbacher, Oliver Neitzke, Sergey Khrushchev
  • Patent number: 10704755
    Abstract: A lighting apparatus may include a light generating device for generating a primary light beam, a phosphor body that can be irradiated by means of the primary light beam and serves for partly converting primary light of the primary light beam into secondary light, and a spectral filter disposed downstream of the phosphor body. The spectral filter may be more highly transmissive to the secondary light than to the primary light where the spectral filter is arranged along a beam axis of the primary light beam incident on the phosphor body. The lighting apparatus may be used in LARP arrangement for vehicle lighting, general lighting, exterior lighting, stage lighting, effect lighting, etc.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: July 7, 2020
    Assignee: OSRAM Beteiligungsverwaltung GmbH
    Inventor: Stefan Hadrath
  • Patent number: 10440335
    Abstract: An optical device is provided including a light-imaging component configured to focus light fed to the light-imaging component in at least one focusing spot, wherein the light fed includes at least one predefinable wavelength; and a conversion apparatus including at least one phosphor which is designed to convert light having the at least one predefinable wavelength into conversion light, wherein the conversion apparatus is arranged in such a way that the at least one phosphor is arranged in the focusing spot of the light-imaging component. The light-imaging component is configured to generate at least two focusing spots, and the conversion apparatus is arranged in such a way that the at least two focusing spots are positioned on the at least one phosphor.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: October 8, 2019
    Assignee: OSRAM GMBH
    Inventor: Stefan Hadrath
  • Patent number: 10436714
    Abstract: A method for detecting damage to a converter device of a lighting apparatus is provided. The method may include irradiating the converter device with input light, detecting a useful light portion emitted principally by a first section of the converter device by means of a first sensor element. A first detection signal is obtained, detecting a useful light portion emitted principally by a second section of the converter device, said second section being different than the first section, by means of a second sensor element. A second detection signal is obtained. The method further may include automatically obtaining damage information about the converter device from a ratio or a difference of the first detection signal with respect to either the second detection signal or a comparison signal formed therefrom.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: October 8, 2019
    Assignee: OSRAM GMBH
    Inventors: Peter Hoehmann, Stefan Hadrath
  • Patent number: 10386033
    Abstract: A lighting apparatus includes at least one primary light source for emitting primary light, at least one phosphor body arranged at a distance from the primary light source, for converting the wavelength of primary light into secondary light, and at least one at least partly dichroic mirror, which at least partly deflects primary light radiated thereon onto at least one phosphor body and which passes secondary light radiated by the phosphor body. Used light radiated by the lighting apparatus contains the secondary light and primary light radiated by at least one primary light source, and the dichroic mirror includes at least one first and second mirror regions, in such a way that the first mirror region deflects primary light onto at least one phosphor body and passes secondary light incident from the phosphor body, and that the second mirror region deflects primary light in a manner circumventing the phosphor body.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: August 20, 2019
    Assignee: OSRAM GMBH
    Inventor: Stefan Hadrath
  • Publication number: 20190178460
    Abstract: A lighting apparatus may include a light generating device for generating a primary light beam, a phosphor body that can be irradiated by means of the primary light beam and serves for partly converting primary light of the primary light beam into secondary light, and a spectral filter disposed downstream of the phosphor body. The spectral filter may be more highly transmissive to the secondary light than to the primary light where the spectral filter is arranged along a beam axis of the primary light beam incident on the phosphor body. The lighting apparatus may be used in LARP arrangement for vehicle lighting, general lighting, exterior lighting, stage lighting, effect lighting, etc.
    Type: Application
    Filed: July 14, 2017
    Publication date: June 13, 2019
    Inventor: Stefan HADRATH
  • Patent number: 10203079
    Abstract: Various embodiments may relate to a lighting apparatus, including at least one primary light source for generating primary light, a reflector having two spaced-apart focal spots, a guiding optical unit disposed downstream of the at least one primary light source and serving for guiding the primary light to a first focal spot of the reflector, and a conversion device for at least partly converting the primary light into secondary light having a different wavelength which is situated at the second focal spot. The reflector has a first reflective partial region, to which the two focal spots are assigned, and a second reflective partial region, which is a partial region retroreflective for the second focal spot. The primary light emitted by the at least one primary light source is incident on the first partial region.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: February 12, 2019
    Assignee: OSRAM GMBH
    Inventor: Stefan Hadrath
  • Patent number: 10132458
    Abstract: A lighting device provides a lighting unit for emitting useful light and a sensor. The unit includes a laser diode for emitting pump radiation and a phosphor element, which during operation is irradiated by the laser diode and thereby excited and serves for converting the pump radiation into conversion light, which conversion light at least proportionally forms the useful light. The sensor monitors the pump radiation conversion and at the same time detects a conversion light intensity, and is arranged with respect to the phosphor element of the unit so that a portion of the useful light and a measurement portion of the conversion light is incident on the sensor. The lighting device operates so that the phosphor element at least at times is irradiated in a pulsed manner and thereby excited so that between two pulses the conversion light intensity detected by the sensor decreases by at least 10%.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: November 20, 2018
    Assignee: OSRAM GMBH
    Inventors: Norbert Haas, Stefan Hadrath
  • Publication number: 20180180238
    Abstract: A lighting device provides a lighting unit for emitting useful light and a sensor. The unit includes a laser diode for emitting pump radiation and a phosphor element, which during operation is irradiated by the laser diode and thereby excited and serves for converting the pump radiation into conversion light, which conversion light at least proportionally forms the useful light. The sensor monitors the pump radiation conversion and at the same time detects a conversion light intensity, and is arranged with respect to the phosphor element of the unit so that a portion of the useful light and a measurement portion of the conversion light is incident on the sensor. The lighting device operates so that the phosphor element at least at times is irradiated in a pulsed manner and thereby excited so that between two pulses the conversion light intensity detected by the sensor decreases by at least 10%.
    Type: Application
    Filed: May 20, 2016
    Publication date: June 28, 2018
    Inventors: Norbert Haas, Stefan Hadrath
  • Publication number: 20180007326
    Abstract: An optical device is provided including a light-imaging component configured to focus light fed to the light-imaging component in at least one focusing spot, wherein the light fed includes at least one predefinable wavelength; and a conversion apparatus including at least one phosphor which is designed to convert light having the at least one predefinable wavelength into conversion light, wherein the conversion apparatus is arranged in such a way that the at least one phosphor is arranged in the focusing spot of the light-imaging component. The light-imaging component is configured to generate at least two focusing spots, and the conversion apparatus is arranged in such a way that the at least two focusing spots are positioned on the at least one phosphor.
    Type: Application
    Filed: September 28, 2015
    Publication date: January 4, 2018
    Inventor: Stefan Hadrath
  • Publication number: 20170328540
    Abstract: A lighting device is disclosed with excitation light source(s) for emitting excitation light along an excitation light path; a wavelength conversion assembly including wavelength conversion element(s) for converting the excitation light into conversion light and emitting it into the same half-space from which the excitation light is radiated onto the surface of the element, and reflection element(s) for reflecting, in unconverted fashion, the excitation light intermittently radiated onto the reflection element from the source(s) along the portion of the excitation light path onto a reflection light path as reflection light; and a dichroic mirror for deflecting the excitation light coming from the source(s) onto the portion of the excitation light path on which the excitation light is radiated onto the wavelength conversion element(s) or the reflection element(s). The mirror is configured such that the conversion light is transmitted through the mirror and the reflection light is guided past the mirror.
    Type: Application
    Filed: October 5, 2015
    Publication date: November 16, 2017
    Inventors: Ruediger Paul, Stefan Hadrath
  • Publication number: 20170322154
    Abstract: A method for detecting damage to a converter device of a lighting apparatus is provided. The method may include irradiating the converter device with input light, detecting a useful light portion emitted principally by a first section of the converter device by means of a first sensor element. A first detection signal is obtained, detecting a useful light portion emitted principally by a second section of the converter device, said second section being different than the first section, by means of a second sensor element. A second detection signal is obtained. The method further may include automatically obtaining damage information about the converter device from a ratio or a difference of the first detection signal with respect to either the second detection signal or a comparison signal formed therefrom.
    Type: Application
    Filed: April 10, 2017
    Publication date: November 9, 2017
    Inventors: Peter Hoehmann, Stefan Hadrath
  • Publication number: 20170307167
    Abstract: A lighting apparatus includes at least one primary light source for emitting primary light, at least one phosphor body arranged at a distance from the primary light source, for converting the wavelength of primary light into secondary light, and at least one at least partly dichroic mirror, which at least partly deflects primary light radiated thereon onto at least one phosphor body and which passes secondary light radiated by the phosphor body. Used light radiated by the lighting apparatus contains the secondary light and primary light radiated by at least one primary light source, and the dichroic mirror includes at least one first and second mirror regions, in such a way that the first mirror region deflects primary light onto at least one phosphor body and passes secondary light incident from the phosphor body, and that the second mirror region deflects primary light in a manner circumventing the phosphor body.
    Type: Application
    Filed: September 30, 2015
    Publication date: October 26, 2017
    Inventor: Stefan Hadrath
  • Patent number: 9677720
    Abstract: A lighting device comprising a phosphor wheel configured such that it temporarily sequentially not only emits the excitation light in a wavelength-converted fashion as conversion light but additionally reflects said excitation light in an unconverted fashion as reflection light. Conversion light and reflection light are guided spatially separately on a conversion light path and reflection light path, respectively, with the aid of a first dichroic mirror and are finally combined with the aid of a second dichroic mirror. In this way, it is possible to combine the reflection light for example as a blue light channel with the conversion light.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: June 13, 2017
    Assignee: OSRAM GmbH
    Inventors: Stefan Hadrath, Oliver Mehl
  • Publication number: 20170108190
    Abstract: Various embodiments may relate to a lighting apparatus, including at least one primary light source for generating primary light, a reflector having two spaced-apart focal spots, a guiding optical unit disposed downstream of the at least one primary light source and serving for guiding the primary light to a first focal spot of the reflector, and a conversion device for at least partly converting the primary light into secondary light having a different wavelength which is situated at the second focal spot. The reflector has a first reflective partial region, to which the two focal spots are assigned, and a second reflective partial region, which is a partial region retroreflective for the second focal spot. The primary light emitted by the at least one primary light source is incident on the first partial region.
    Type: Application
    Filed: February 4, 2015
    Publication date: April 20, 2017
    Inventor: Stefan Hadrath
  • Patent number: 9249951
    Abstract: A lens (12; 32; 42; 52) comprising a transparent main body (13; 43; 53), wherein a surface (14, 15; 14, 45; 54, 55) of the main body (13; 43; 53) is at least partly covered with an internally reflecting reflection layer (17), the lens (12; 32; 42; 52) has at least one first focal point (F1) and at least one second focal point (F2), at least the first focal point (F1) lies at least partly on a non-covered surface region of the main body (15; 45; 55), and at least one phosphor element (18) bears against the main body (13; 43; 53) at a contact region (19) having at least one first focal point (F1).
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: February 2, 2016
    Assignee: OSRAM GmbH
    Inventors: Stefan Hadrath, Ulrich Hartwig, Henning Rehn
  • Publication number: 20150267880
    Abstract: A lighting device comprising a phosphor wheel configured such that it temporarily sequentially not only emits the excitation light in a wavelength-converted fashion as conversion light but additionally reflects said excitation light in an unconverted fashion as reflection light. Conversion light and reflection light are guided spatially separately on a conversion light path and reflection light path, respectively, with the aid of a first dichroic mirror and are finally combined with the aid of a second dichroic mirror. In this way, it is possible to combine the reflection light for example as a blue light channel with the conversion light.
    Type: Application
    Filed: February 5, 2015
    Publication date: September 24, 2015
    Applicant: OSRAM GMBH
    Inventors: Stefan Hadrath, Oliver Mehl
  • Publication number: 20150124428
    Abstract: A lens (12; 32; 42; 52) comprising a transparent main body (13; 43; 53), wherein a surface (14, 15; 14, 45; 54, 55) of the main body (13; 43; 53) is at least partly covered with an internally reflecting reflection layer (17), the lens (12; 32; 42; 52) has at least one first focal point (F1) and at least one second focal point (F2), at least the first focal point (F1) lies at least partly on a non-covered surface region of the main body (15; 45; 55), and at least one phosphor element (18) bears against the main body (13; 43; 53) at a contact region (19) having at least one first focal point (F1).
    Type: Application
    Filed: April 29, 2013
    Publication date: May 7, 2015
    Applicant: OSRAM GMBH
    Inventors: Stefan Hadrath, Ulrich Hartwig, Henning Rehn
  • Publication number: 20150099940
    Abstract: A luminaire includes a reflector arrangement and a light generating unit, which emits its light onto the reflector arrangement. The reflector arrangement includes at least two shell-layer-shaped reflector rings which are arranged coincidentally with regard to their axes of symmetry. The reflector rings have different middle radii, are arranged in a manner one nested in another, and are embodied as total internal reflection reflectors.
    Type: Application
    Filed: September 4, 2014
    Publication date: April 9, 2015
    Inventors: Stefan Hadrath, Nico Morgenbrod
  • Patent number: D736986
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: August 18, 2015
    Assignee: OSRAM GmbH
    Inventors: Stefan Hadrath, Nico Morgenbrod